Efficient door assembly

ABSTRACT

A door assembly comprises a rectangular door frame that has a first, second, third, and fourth frame member. The first frame member has an outer surface that has a first pair of parallel slots. A first parallel flange protrudes from and perpendicular to the outer surface between the parallel slots. A vane extends from the first frame member to the second frame member between the third and fourth frame members. The vane has a first end that includes a pair of parallel flanges fitted into the parallel slots such that a rear surface of the first planar flange is arranged between rear edges of the first parallel flanges. A bar is mounted to the rear surface of the first planar flange and configured to hold the rear edges of the first parallel flanges in substantially the same plane as the rear surface of the first planar flange.

BACKGROUND

Aspects of the present disclosure relate to server mountinginfrastructure, more particular aspects relate to server doorconstruction.

Typical server doors are designed to allow air to flow through theserver door, while preventing noise and electromagnetic radiation fromspreading from one side of the door to the other. These conflictingdesign objectives lead to server doors of varying complexity, whichoften causes the doors to be expensive to manufacture and assemble.

SUMMARY

Some embodiments of the present disclosure can be illustrated by anassembly for a door. The assembly comprises a rectangular door framethat has a first, second, third, and fourth frame member. The firstframe member comprises an outer surface that has a first pair ofparallel slots. The outer surface has a first planar flange arrangedbetween the first pair of parallel slots and protrudes out from andperpendicular to the outer surface. The assembly further comprises avane extending from the first frame member to the second frame memberand between the third and fourth frame members. The vane has a first endthat includes a first pair of parallel flanges fitted into the firstpair of slots, such that a rear surface of the first planar flange isarranged between rear edges of the first parallel flanges. The doorassembly also comprises a bar mounted on the rear surface of the firstplanar flange. The bar is mounted such that it holds the rear edges ofthe first parallel flanges in substantially the same plane as the rearsurface as the first planar flange.

Some embodiments of the present disclosure can be illustrated by amethod of assembling a door. A first end of a first vane is attached toa first frame member of the door. The attaching includes inserting afirst pair of parallel flanges on the first end into a first pair ofparallel slots on an outer surface of the first frame member. Theparallel flanges are inserted into the slots such that a rear surface ofa first planar flange is arranged between rear edges of the firstparallel flanges. The attaching also includes mounting a first bar tothe rear surface of the first planar flange such that the bar holds therear edges of the first parallel flanges in substantially the same planeas the rear surface of the first planar flange. A second end of thefirst vane is then attached to a second frame member of the door. Thesecond frame member is opposite the first frame member with respect tothe door. The attaching the second end includes inserting a second pairof parallel flanges on the second end into a second pair of parallelslots on an outer surface of the second frame member. The parallelflanges are inserted into the slots such that a rear surface of a secondplanar flange is arranged between rear edges of the second parallelflanges. The attaching the second end also includes mounting a secondbar to the rear surface of the second planar flange such that the secondbar holds the rear edges of the second parallel flanges in substantiallythe same plane as the rear surface of the second planar flange. Finally,the attaching the second end further comprises mounting the first submember to a second sub member of the second frame member, the second submember being fixedly attached to the door assembly.

The above summary is not intended to describe each illustratedembodiment or every implementation of the present disclosure.

BRIEF DESCRIPTION OF THE DRAWINGS

The drawings included in the present application are incorporated into,and form part of, the specification. They illustrate embodiments of thepresent disclosure and, along with the description, serve to explain theprinciples of the disclosure. The drawings are only illustrative ofcertain embodiments and do not limit the disclosure.

FIG. 1A depicts the frame of a server-rack door to which insulatingcomponents may be added, in accordance with embodiments.

FIG. 1B depicts a vane that may be added to a server-rack door, inaccordance with embodiments.

FIG. 1C depicts the frame of a server-rack door to which multiple vaneshave been added, in accordance with embodiments.

FIG. 2 depicts the end of a vane that may be securely attached to aserver door, in accordance with embodiments.

FIG. 3 depicts a frame member with which the end of a vane mayinterface, in accordance with embodiments.

FIG. 4A depicts a frame member and end of a vane interfacing, inaccordance with embodiments.

FIG. 4B depicts the end of a vane secured with a securing bar, inaccordance with embodiments.

FIG. 4C depicts an alternative view of a vane secured with a securingbar, in accordance with embodiments.

FIG. 5 depicts the ends of multiple vanes interfacing with a framemember, in accordance with embodiments.

FIG. 6A depicts a view of a first frame sub member installed in a serverdoor frame, in accordance with embodiments.

FIG. 6B depicts a view of a second frame sub member that may attached tothe first frame sub member, in accordance with embodiments.

FIG. 6C depicts a view of the second frame sub member attached to thefirst frame sub member, in accordance with embodiments.

FIG. 7A depicts a cross-sectional view of a vane, in accordance withembodiments.

FIG. 7B depicts a cross-sectional view of a flexible insulating member,in accordance with embodiments.

FIG. 7C depicts a cross-sectional view of a flexible insulating memberinserted into a vane, in accordance with embodiments.

FIG. 7D depicts a cross-sectional view of a flexible insulating memberinserted into a vane in an alternate orientation, in accordance withembodiments.

While the invention is amenable to various modifications and alternativeforms, specifics thereof have been shown by way of example in thedrawings and will be described in detail. It should be understood,however, that the intention is not to limit the invention to theparticular embodiments described. On the contrary, the intention is tocover all modifications, equivalents, and alternatives falling withinthe spirit and scope of the invention.

DETAILED DESCRIPTION

Aspects of the present disclosure relate to server mountinginfrastructure, more particular aspects relate to server doorconstruction. While the present disclosure is not necessarily limited tosuch applications, various aspects of the disclosure may be appreciatedthrough a discussion of various examples using this context.

Some components in specialized computer systems, such as large servers,are typically produced in small volumes. In some cases this may be dueto those components being custom designed for each use case. In someother cases this may be due to those components being used in extremelyhigh-end products, the market for which may be small. These smallvolumes oftentimes do not justify the up-front expense of developingsolutions to automate tooling or assembly of the related components.Server rack doors, for example, are typically built at volumes that donot justify machine welding of door components, such as the aerodynamiccomponents used to direct airflow into or out of the server rack orinsulation components used to stop electromagnetic radiation or thenoise of server fans from spreading to the server room. Human labor maybe utilized for these components, which may be very expensive per part.Further, the cost of human labor increases quickly as the complexity orintricacy of a component or assembly process increases. Thus,server-rack doors are often designed to keep labor costs low. Thesebasic server-rack-door designs are often less functional than optimaldesigns that may cost more to produce.

Some embodiments described in the present disclosure improve uponserver-rack-door technology by providing component design and a methodof assembly that may be performed by human labor quickly while stillproducing efficient airflow and acoustic and electrical insulation. Insome embodiments little to no welding of door components may berequired. Some embodiments may hide the mounting points of all doorcomponents, resulting in an aesthetically appealing design. Someembodiments may utilize similar connections across multiple components,enabling the same or similar construction methods to be utilized acrossmultiple server-rack doors designed for different use cases.

FIG. 1A depicts the Frame 100 of a server-rack door to which aerodynamicand insulating components may be added (referred to herein as “vanes”).Frame 100 may have two Side Members 102, Top Member 104, and BottomMember 106. Together these four members may define Opening 108, throughwhich air may flow to cool components of the server. FIG. 1B depictsVane 110, which may be added to Frame 100. In some embodiments Vane 110may interface with any of Top Member 104, Bottom Member 106, and SideMembers 102. For example, FIG. 1C illustrates multiple Vanes 110interfacing with Bottom Member 106. In some embodiments Vanes 110 mayinterface with Top Member 104 or both Top Member 104 and Bottom Member106. In other embodiments, Vanes 110 may span the opening in aperpendicular direction by interfacing with one or both of Side Members102.

FIG. 2 illustrates one embodiment of the end of a vane that may besecurely attached to a server door without welding or other significanthuman labor. The end of Vane 200 has two parallel Flanges 202. Flanges202 are “L shaped,” which creates a gap between the vertical portion ofeach Flange 202 and the body of Vane 200. These Flanges 202 may beinserted into an opening on the frame of a server door and used tosecure Vane 200 in place in the door. Flanges 202, in this embodiment,have Rear Edge 204 and Side Edge 206, one or both of which may beutilized in bracing Vane 200 when Flanges 202 are inserted into a serverdoor.

In some embodiments, other flange shapes may be utilized with similareffects. In some embodiments, for example, Flanges 202 may be curved tocreate a hook shape, rather than bent as shown. In other embodimentsFlanges 202 may not exhibit any bend or curve, but may protrude straightfrom Vane 200. In this embodiment two Flanges 202 are shown on eitherside of the end of Vane 200, which may increase stability of Vane 200when mounted. However, in some embodiments different positions ofFlanges 202 may be utilized.

FIG. 3 illustrates one embodiment of a frame member with which the endof a vane may interface. Opening 300 is found on Surface 302, which maybe the end of a server-door frame (e.g., Bottom Member 106 of FIG. 1C).The ends of a vane may be inserted through Opening 300 and into Slots304 to secure the vane in place. For example, Flanges 202 of FIG. 2 maybe inserted into Slots 304 such that the gap between the verticalportion of the L-shaped Flange 202 and Vane 200 are positioned onopposite ends of the frame member (e.g., Bottom Member 106 of FIGS. 1A &1C). This may prevent Vane 200 from separating from the frame memberwithout first being lifted out of Slots 304. Note that, in thisembodiment, Opening 300 is significantly greater than Slots 304. Thismay enable vane ends of different shapes to interface with the framemember. In other embodiments, however, Opening 300 may be of a shape andsize corresponding to a specific vane end (e.g., an openingcorresponding to Flanges 202 of Vane 200 may be limited to two parallelslots).

The frame member of FIG. 3 also has Planar Flange 306. In someembodiments Planar Flange 306 may be used as a structural support foradditional components that may assist in securing the end of a vane tothe frame member. In this embodiment such components may attach to theflange through Hole 308 (e.g., by means of a bolt), but in otherembodiments other attachment mechanisms may be used.

FIGS. 4A-4C illustrate one embodiment of the end of a vane such as Vane200 of FIG. 2 interfacing with a frame member such as in FIG. 3. In FIG.4A, Flanges 402 have been inserted into the slots of the frame member.Rear Edges 404 of Flanges 402 may be flush with Rear Surface 408 ofFlange 406. In this illustration, no securing mechanism is present toprevent Flanges 402 from separating from Flange 406. In some embodimentsa securing member may be added to prevent Flanges 402 and Flange 406from separating. Such an embodiment is shown in FIG. 4B. Securing Bar410 lies against Rear Edges 404 and Rear Surface 408 (not shown),preventing Flanges 402 from separating from Flange 406 (not shown). Inthis illustration Securing Bar 410 is held in place in part by Bolt 412,which may extend through a hole in Flange 406. In some embodiments Bolt412 may be tightened to an extent that Securing Bar 410 prevents Flanges402 from vibrating in place. In other embodiments Securing Bar 410 maybe held in place by other mechanisms, such as a clamp, adhesive, awelded bond, any of which may be located near Flange 406 or elsewhere(e.g., on a different flange on the same frame member or at either endof the frame member).

FIG. 4C provides an alternative view of Securing Bar 410 fasteningFlanges 402 (and thus the connected vane) in place. In FIG. 4C, Flanges402 are connected to Vane 414, and inserted through a pair of slots inFrame Member 416. FIG. 4C shows that the horizontal portion of SecuringBar 410 interfaces with the Rear Surface 408 (not shown) of Flange 406and Rear Edges 404 (not shown) of Flanges 402. In this embodiment, onlyone Vane 414 has been inserted into an opening on Frame Member 416.However, three other openings are present, each of which may haveflanges corresponding to Holes 418 in Securing Bar 410. In thisembodiment, additional vanes with L-shaped flanges may be added and heldin place by Securing Bar 410. Further bolts may be inserted throughHoles 418 to increase the ability of Securing Bar 410 to hold the vanesin place. In other embodiments Frame Member 416 may contain only theopening corresponding to Vane 414, in which case Securing Bar 410 may besignificantly shorter, and Holes 418 may not be present. Alternatively,Securing Bar 410 as shown (with Holes 418) may be utilized inembodiments with a small number of vanes (e.g., one or two vanes). Inother words, Securing Bar 410 may be utilized in various embodiments inwhich the number of openings in the frame member (and the correspondingnumber of vanes to secure) may differ from the length of Securing Bar410 and the number of holes in Securing Bar 410.

FIG. 5 illustrates the modularity with which the solutions described inthe present disclosure may be used. In FIG. 5, two rows of Vanes 500have been attached to Frame Member 502. In this embodiment, the bottomrow has four vanes, whereas the top row has five vanes. Each of thevanes contain a set of L-shaped Flanges 504. The top-row vanes are heldin place by Securing Bar 506, and the bottom-row vanes are held in placeby Securing Bar 508. In this embodiment Securing Bar 506 and SecuringBar 508 are interchangeable parts, and thus Securing Bar 508 containsunused Hole 510. In some embodiments either the top row or bottom rowmay contain more than five vanes, in which case one or both of SecuringBar 506 and Securing Bar 508 may be longer, or all securing bars mayhave five holes, but multiple securing bars may be used on rows withmore than five vanes. In other embodiments Frame Member 502 may havemore than two rows of vanes, in which case more securing bars may beused.

In the embodiment illustrated by FIG. 5, many parts may beinterchangeable to other parts used for the same purpose. This mayreduce the cost of designing and setting up the manufacturing processesfor the components of multiple different server-rack door designs (e.g.,a door with four rows with four vanes and a door with one row of threevanes may each use securing bars with six holes). In some instances thismay also enable components to be obtained at high-volume prices. In thisembodiment, for example, all nine Vanes 500, both Securing Bar 506 andSecuring Bar 508, and all bolts may be substantially identical tosimilarly used components (e.g., each Vane 500 is substantiallyidentical to each other Vane 500) such that they are interchangeable.Because these substantially identical parts may, in some embodiments, beused in other server-door designs as well, only one manufacturingsolution may be necessary for multiple implementations, even when thoseimplementations differ. This increases the ability to and benefit ofordering components at high volume.

In this embodiment the openings in Frame Member 502 that correspond tothe top-row vanes differ in design from the openings corresponding tothe bottom-row vanes. Namely, the top-row openings are not bound on allfour sides. This may reduce the time and effort required to insert theL-shaped Flanges 504 for the top-row Vanes 500 into the openings, whichmay reduce the human-labor cost of the server-door assembly. In someother embodiments, however, there may be cost savings in the top andbottom row openings being interchangeable (e.g., the cost to machine asingle opening design may be significantly less than the cost to machinetwo opening designs), in which case the openings may be substantiallyidentical.

FIGS. 6A-6C illustrate an embodiment in which a frame member is composedof multiple sub members that may be separated to increase the ease withwhich vanes may be attached to the frame member. This may also reducethe human-labor cost of the server-door assembly. FIG. 6A shows asection of a Door Frame 600 with a frame Sub Member 602. Sub Member 602has a series of Holes 604 through which a second frame sub member may beattached to Sub Member 602. FIG. 6B illustrates Sub Member 606 separatedfrom a server-door assembly. Sub Member 606 has two rows of openingsinto which the end of a vane may be inserted, similar to Frame Member502 of FIG. 5. Protruding from Sub Member 606 are Flanges 608 at thelocations of the bottom-row openings and Flanges 610 at the locations ofthe top-row openings. Both Flanges 608 and 610 contain Holes 616,through which a securing bar may be attached to the flanges. However,each of Flanges 610 contain an additional Hole 612 which, in thisembodiment, corresponds to one of Sub Member 602's Holes 604.

FIG. 6C illustrates Sub Member 606 attached to Sub Member 602. Screws614 have been inserted through Holes 612 and 604, securing Sub Member606 to Sub Member 602. In some embodiments this attachment may beperformed before vanes have been attached to Sub Member 606. However, inthe embodiment illustrated in FIGS. 6A-6C it may be beneficial to attachvanes prior to attaching Sub Member 606 to Sub Member 602; Sub Member602 may impede access to Flanges 608 once Sub Member 606 is attached.Further, attaching vanes to Flanges 608 and 610 prior to attaching SubMember 606 may increase the speed at which the vanes may be inserted tocorresponding openings on an opposite frame member (e.g., opposite thedoor frame of Sub Member 606). This may reduce the cost of human laborin assembling the server door.

In this embodiment Sub Members 606 and 602 are connected through Holes612 and 604. However, in some embodiments each of Flanges 610 may bedesigned with only Hole 616. In these embodiments Sub Members 606 and602 may be connected through Hole 616, the same hole through which asecuring bar is attached to Flanges 610. In other embodiments SubMembers 606 and 602 may be connected through another means, such as aclamp, adhesive, a welded bond, or others.

FIGS. 7A-7D illustrate a cross-section profile of one embodiment of avane with a flexible insulating member installed in multipleconfigurations. Vane 700 may be a vane design that may be installed in aframe member according to any of FIGS. 1-5. Vane 700 has Cavity 702,into which an insulating member may be installed to reflect or absorbsound and electromagnetic radiation or to redirect air flow. Vane 700has a Tab 704 on each side of Cavity 702. Tab 704 may be used to secureinsulating members in Cavity 702, as will be shown in connection withFIGS. 7C and 7D. In some embodiments, Tab 704 may extend the entirelength of Vane 700. In other embodiments, one shorter Tab 704 may belocated only at one point throughout the length of Vane 700 (e.g., themiddle) or multiple shorter Tabs 704 may be located throughout thelength of Vane 700 (e.g., at each end and at the middle). In someembodiments Vane 700 may have a tab only on one side of Cavity 702.

FIG. 7B illustrates one embodiment of a cross section of an InsulatingMember 706 that may be inserted into Cavity 702. Insulating Member 706may be composed of any material with sufficient flexibility to beinserted into Cavity 702 past Tabs 704 and with insulating properties.For example, Insulating Member 706 may be composed of open-cellpolyurethane foam or closed-cell polystyrene or neoprene foam.Insulating Member 706 has a pentagon cross section in this embodiment,but in other embodiments it may take other forms (e.g., a square, akite, or a regular or irregular hexagon).

FIG. 7C illustrates one embodiment in which Insulating Member 706 mayinserted into Cavity 702. This orientation of Insulating Member 706 maybe beneficial when space limitations preclude Insulating Member 706 fromspreading past Tabs 704 or for airflow considerations. Insulating Member706 has been deformed by Tabs 704, which, in this embodiment, preventInsulating Member 706 from exiting the cavity. In this embodimentInsulating Member 706 may also be prevented from vibrating or rattlingin Cavity 702 by the pressure placed upon it by Tabs 704. In someembodiments Insulating Member 706 may be slightly shorter, such thatTabs 704 only make contact with the top of Insulating Member 706 and donot squeeze the sides of Insulating Member 706. This may make InsulatingMember 706 less likely to exit Cavity 702, but may also make InsulatingMember 706 more likely to vibrate within Cavity 702.

FIG. 7D illustrates a second embodiment in which Insulating Member 706may be inserted into FIG. 7D. This orientation may be beneficial todirect airflow to either side of Vane 700 in embodiment in which spacelimitations are less constricting than in FIG. 7C. In this embodimentTabs 704 again deforms Insulating Member 706, which may again preventInsulating Member 706 from exiting Cavity 702.

As FIGS. 7C and 7D show, Insulating Member 706, if flexible, may beinstalled in multiple orientations in different embodiments. This mayenable assemblers of server-rack doors to order a high volume of oneflexible-insulating-member design, which may reduce the cost of thepart. Further, because the insulating member is flexible, it can beinserted into the cavity of a vane with ease by a human installerwithout the use of any tools, which may reduce the cost of human labor.

The descriptions of the various embodiments of the present disclosurehave been presented for purposes of illustration, but are not intendedto be exhaustive or limited to the embodiments disclosed. Manymodifications and variations will be apparent to those of ordinary skillin the art without departing from the scope and spirit of the describedembodiments. The terminology used herein was chosen to explain theprinciples of the embodiments, the practical application or technicalimprovement over technologies found in the marketplace, or to enableothers of ordinary skill in the art to understand the embodimentsdisclosed herein.

What is claimed is:
 1. A door assembly comprising: a rectangular doorframe having a first, second, third, and fourth frame member; an outersurface of the first frame member having a first pair of parallel slotsa first planar flange arranged between the first pair of parallel slotsand protruding out from and perpendicular to the outer surface; a vaneextending from the first frame member to the second frame member betweenthe third and fourth frame members, a first end of the vane including afirst pair of parallel flanges fitted into the first pair of slots suchthat a rear surface of the first planar flange is arranged between rearedges of the first parallel flanges; and a bar mounted to the rearsurface of the first planar flange and configured to hold the rear edgesof the first parallel flanges in a substantially same plane as the rearsurface of the first planar flange.
 2. The door assembly of claim 1,wherein the vane comprises a cavity into which a flexible insulatingstrip is inserted.
 3. The door assembly of claim 2, wherein the vanecomprises a tab that secures the flexible insulating strip in place inthe cavity.
 4. The door assembly of claim 1, wherein the bar is mountedto the first planar flange by a bolt through the bar and first planarflange.
 5. The door assembly of claim 1, further comprising: a secondpair of parallel slots on the outer surface of the first frame member;and a second planar flange arranged between the second pair of parallelslots and protruding out from and perpendicular to the outer supportsurface.
 6. The door assembly of claim 5, wherein the second planarflange is positioned relative to the first planar flange such that thebar rests on a rear surface of the second planar flange when the bar ismounted to the rear surface of the first planar flange.
 7. The doorassembly of claim 5, wherein the second planar flange is offset from thefirst planar flange in a first dimension, wherein a length along thefirst dimension corresponds to a thickness of the door assembly.
 8. Thedoor assembly of claim 1, wherein the second frame member is positionedopposite the first frame member with respect to the door frame andcomprises a first sub member releasably attached to a second sub member,the first sub member comprising: a third pair of parallel slots; and athird planar flange arranged between the third pair of parallel slotsand protruding out from and perpendicular to an outer surface of thefirst sub member.
 9. The door assembly of claim 8, further comprising: asecond end of the vane comprising a second pair of parallel flangesfitted into the third pair of parallel slots such that a rear surface ofthe third planar flange is arranged between rear edges of the secondparallel flanges; and a second bar mounted to the rear surface of thethird planar flange and configured to hold the rear edges of the secondparallel flanges in a substantially same plane as the rear surface ofthe third planar flange.
 10. A method of assembling a door, comprising:attaching a first end of a first vane to a first frame member of thedoor, the attaching the first end comprising: inserting a first pair ofparallel flanges on the first end into a first pair of parallel slots onan outer surface of the first frame member, such that a rear surface ofa first planar flange is arranged between rear edges of the firstparallel flanges; and mounting a first bar to the rear surface of thefirst planar flange such that the bar holds the rear edges of the firstparallel flanges in a substantially same plane as the rear surface ofthe first planar flange; and attaching a second end of the first vane toa second frame member of the door, wherein the second frame member isopposite the first frame member with respect to the door, and theattaching the second end comprises: inserting a second pair of parallelflanges on the second end into a second pair of parallel slots on anouter surface of a first sub member of the second frame member, suchthat a rear surface of a second planar flange is arranged between rearedges of the second parallel flanges; mounting a second bar to the rearsurface of the second planar flange such that the second bar holds therear edges of the second parallel flanges in a substantially same planeas the rear surface of the second planar flange; and mounting the firstsub member to a second sub member of the second frame member, whereinthe second sub member is fixedly attached to the door assembly.
 11. Themethod of claim 10, further comprising inserting a first flexibleinsulating strip into a cavity of the first vane, wherein the cavitycomprises a tab that secures the first flexible insulating strip inplace.
 12. The method of claim 10, wherein the first bar is mounted tothe rear surface of the first planar flange with a first bolt.
 13. Themethod of claim 10, wherein the second bar is mounted to the rearsurface of the second planar flange with a second bolt.
 14. The methodof claim 10, wherein the first sub member is mounted to the second submember with a third bolt.
 15. The method of claim 10, wherein the firstbar is mounted to the rear surface of the first planar flange with afirst bolt, the second bar is mounted to the rear surface of the secondplanar flange with a second bolt, the first sub member is mounted to thesecond sub member with a third bolt, and the first, second, and thirdbolts are substantially identical, such that they are interchangeable.16. The method of claim 10, wherein the first bar and the second bar aresubstantially identical such that they are interchangeable.
 17. Themethod of claim 10, further comprising: attaching a first end of asecond vane to the first frame member; and attaching a second end of thesecond vane to the second frame member; wherein the first vane and thesecond vane are substantially identical such that they areinterchangeable.
 18. The method of claim 17, further comprisinginserting a second flexible insulating strip into a cavity of the secondvane, wherein the first flexible insulating strip and the secondflexible insulating strip are substantially identical such that they areinterchangeable.